16721201002 has 24 divisors (see below), whose sum is σ = 28338047712. Its totient is φ = 7338450000.

The previous prime is 16721200981. The next prime is 16721201053. The reversal of 16721201002 is 20010212761.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433374 + ... + 470377.

It is an arithmetic number, because the mean of its divisors is an integer number (1180751988).

Almost surely, 2^16721201002 is an apocalyptic number.

16721201002 is a deficient number, since it is larger than the sum of its proper divisors (11616846710).

16721201002 is a wasteful number, since it uses less digits than its factorization.

16721201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903822 (or 903793 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 16721201002 its reverse (20010212761), we get a palindrome (36731413763).

The spelling of 16721201002 in words is "sixteen billion, seven hundred twenty-one million, two hundred one thousand, two".